Luis Enrique has said he will focus on "evolution and not revolution" as Spain coach.
The former Barcelona coach was chosen by the Royal Spanish Football Federation's executive committee last week to take over from Julen Lopetegui, sacked shortly before the start of the World Cup.
"I want to thank the RFEF for the trust they have placed in me," Luis Enrique said at the organisation's Madrid headquarters on Thursday.
"I know what it means to be national team coach as I've been here as a player. I'm very enthusiastic about this challenge. I'm here to give another twist, improve and do the best I can for the national team. We are here to compete and conquer the next trophy in two years' time.
"I want to thank Lopetegui and [Fernando] Hierro [who took over from Lopetegui for the World Cup] for the work they have done. The line between success and failure is very thin. Football is about continuous evolution. We haven't been able to conquer the titles in the past three tournaments.
"The idea is to evolve, but there will not be a revolution. There will be a generational change. We need to evaluate what is best for the national team looking forward, but we are going to keep the same style.
"We have very good players and also promising players coming up. I think the national team has the quality to play good football, to have a starring role and do the best we can. Of course you can evolve."
Luis Enrique, who guided Barca to nine trophies in his three seasons in charge, has also coached Roma and Celta Vigo and had been on a sabbatical since leaving the Camp Nou in May last year.
His first game in charge of Spain will be a UEFA Nations League encounter with England in September.
Luis Enrique was asked whether he will try to convince Barcelona defender Gerard Pique to continue playing for the national team.
A 2010 World Cup winner and Euro 2012 champion, the 31-year-old Pique announced two years ago that he would retire from international football after the World Cup.
"I haven't spoken to the player," Luis Enrique said. "The player said two years ago what his wish was and we have to respect what players decide. We will analyse each case individually. We want the best players possible."